A MCT based matrix converter with minimized commutation times and enhanced waveform quality

This paper describes the design, construction and testing of a 10 kVA three-phase to three-phase Matrix Converter induction motor drive. The converter has been built using discrete 65 Amp MOS controlled thyristors (MCTs). The commutation time has been minimized to avoid any unnecessary waveform distortion, particularly at low frequencies under v/f control. This minimization gives the Matrix Converter superior waveform quality in comparison to a conventional inverter. The converter has been tested using an 11 kW induction motor and full results of these tests are presented.